Добірка наукової літератури з теми "Accélérateur de prise"
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Статті в журналах з теми "Accélérateur de prise"
Angelini, Christine, and Isabelle Pignatel. "La Responsabilité Sociale d'Entreprise, un accélérateur de la prise en compte du genre." Management & Avenir 38, no. 8 (2010): 188. http://dx.doi.org/10.3917/mav.038.0188.
Повний текст джерелаJeanjean, Emmanuel. "Le projet AdaMont, accélérateur de la prise de conscience du changement climatique dans le Vercors." Sciences Eaux & Territoires Numéro 28, no. 2 (2019): 76. http://dx.doi.org/10.3917/set.028.0076.
Повний текст джерелаTonga, C., F. Pene, L. Chauveinc, and B. Petit. "Radiothérapie prostatique, recommandations internationales et réalité : optimiser la prise en charge des patients lors des réductions de plage horaire des accélérateurs." Cancer/Radiothérapie 20, no. 6-7 (October 2016): 750–51. http://dx.doi.org/10.1016/j.canrad.2016.08.101.
Повний текст джерелаBa, MB, PM Diéne, M. Mané, FCA Chemega, L. Gueye, F. Nging, and PM Gaye. "55: Implémentation et réalisation de la curiethérapie à haut débit de dose (HDR) au service de Radiothérapie de l’Hôpital Dalal Jamm de Dakar." African Journal of Oncology 2, no. 1 Supplement (March 1, 2022): S24—S25. http://dx.doi.org/10.54266/ajo.2.1s.c55.ymwo4373.
Повний текст джерелаДисертації з теми "Accélérateur de prise"
Guay, Jérôme. "Influence d'un agent de mûrissement interne et d'un accélérateur de prise sur la durabilité des bétons." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0009/MQ56749.pdf.
Повний текст джерелаBeilla, Sara. "Modélisation Monte-Carlo d'un accélérateur linéaire pour la prise en compte des densités pulmonaires dans le calcul de la dose absorbée en radiothérapie stéréotaxique." Thesis, Toulouse 3, 2016. http://www.theses.fr/2016TOU30105/document.
Повний текст джерелаFor clinical routine in external Radiotherapy, dose computation is achieved using commercial Treatment Planning Systems (TPS). Since ten years, TPS algorithms have been improved. However they include approximations that are acceptable in most of the clinical cases but they show their limits in some particular conditions for example in presence of small fields and/or low mass y media. And these two conditions are found in the context of stereotactic body radiation therapy (SBRT) of lung tumor. Some studies were published for standard lung densities but none for very low y like in lung during Deep Inspiration Breath Hold (DIBH). This work is a study of dose computation based on a Monte Carlo (MC) model, for different field sizes and mass densities. The first step was to model a TrueBeam(r) linac (Varian, Palo Alto, CA) using data furnished by the manufacturer. This model is built using the Geant4-based GATE platform. The main compounds of the linac head are modeled. Space phase files (i.e. particles files) are furnished by Varian in "IAEAphsp" format and are integrated to the model above the main jaws. To validate this model, a set of simple fields (from 3x3 to 20x20 cm2) in a water phantom is implemented for different photon energies: 6FF, 6FFF, 10FF and 10FFF (FFF = "Flattening Filter Free"). Percentage depth dose (PDD) and lateral profiles are compared to reference measurement in a water tank: respectively 99% and 97% of all the points of these curves passed the Gamma Index test (2% 2mm). Once this validation was completed, a set of simulation was achieved with small field sizes (3x3 to 8x8 cm2) for simple heterogeneous phantoms for which the measurement was achievable. For this purpose, radiochromic films were inserted in phantoms made of PMMA slabs and two types of cork. Cork densities were 0.12 and 0.24 that correspond respectively to lungs during DIBH and free breathing. Results of the MC model for four energies are compared to experimental measurements and to AAA and Acuros Varian's algorithms. AAA algorithm overestimates the dose inside the lung heterogeneity for small field sizes and low density. As an example in the case a 3x3 cm2 field, inside the heterogeneity of density 0.12 an over estimation of 16% in the lung is observed for AAA. The model is finally used for three non-measurable cases: a cylindrical digital reference object and computerized tomography data of a patient during DIBH with a static and stereotactic arc field. Results showed respectively for CT studies an overestimation of dose in the tumor of 7% and 5.4% and in the lungs of 14% and 9.6% by AAA. From a clinical point of view, this means under-dosing the patient and thus a risk of recurrence
Cheikh-Zouaoui, Mustapha. "Contribution à l’étude de la cinétique d’hydratation au jeune âge des bétons à hautes résistances." Cergy-Pontoise, 2008. http://biblioweb.u-cergy.fr/theses/08CERG0372.pdf.
Повний текст джерелаPredicting the short-term strength of concrete is essential in the field of civil engineering. To meet some building requirements (quick formwork removal, earlier prestressing, concreting in cold weather …), it is necessary to make concrete that has the best possible mechanical strength at a young age. The development of this type of concrete requires generally the use of admixtures associated with pozzolanic mineral additions such as silica fume. However this by-product, from the silicon and silica-ferrites alloys industry, still has a high cost owing to its limited production in the industrialised countries and non-availability in the others countries. In this research work, we propose others substitutes to silica fume and the use of special substitution techniques. In addition, combinations of setting and hardening accelerators are considered so as to improve both setting and hardening concrete time as well as the mechanical strength at early age. The results obtained show that the use of alkanolamine combined with calcium nitrate in cement mixes containing siliceous sand grinded and homogenised with cement produced a significant improvement in the mechanical strength at all stages particularly in the early ages (1 and 3 days) and also provided an important reduction in the setting time. Our results indicate that these performances are also dependant on the type of cement used mainly its alumino-ferrites composition
Delporte, Corinne. "L'anhydrite naturelle de faulquemont et sa valorisation sous forme de béton sulfate : Mécanisme d'hydratation et mise au point d'accélérateurs de prise hydraulique." Nancy 1, 1988. http://www.theses.fr/1988NAN10113.
Повний текст джерелаHicheur, Adlène. "Etude de la production de eta-prime de haute impulsion dans les désintégrations du méson B dans l'expérience BaBar." Chambéry, 2003. http://www.theses.fr/2003CHAMS009.
Повний текст джерелаThe work presented in this thesis relies on the analysis of data collected between October 1999 and July 2002 by the BaBar experiment at the PEP-II collider located at SLAC (Stanford, California). Electron-positron collisions at a center of mass energy equal to the Upsilon (4S) resonance mass are used for the production of B meson pairs. In July 2001, the BaBar collaboration published the first measurement of CP violation in the neutral B mesons system. Since then, the precision of the measurement has been continually being improved with the increasing data sample. Two devices are dedicated to the reconstruction of charged particles : the Silicon Vertex Tracker and the Drift Chamber. The Silicon Vertex Tracker is crucial for the reconstruction of the B meson decay vertex. Its motion with regard to the Drift Chamber needs a rolling calibration of the corresponding alignment parameters roughly every two hours. The relation between the Drift Chamber geometry and the alignment has been studied. Beside CP violation, Heavy Flavour Physics is an other important issue of BaBar research program. Rare decays are of particular interest as they are sensible to a new physics beyond the Standard Model. The production of high energy eta' in B decays has been studied through the two main contributions, B -> eta' Xs coming from the rare decay b->sg*, and anti-Bʿ-> eta' Dʿ coming from the internal tree color-suppressed decay b->c anti-u d. The improvement of the measurement of the process B-> eta' Xs and the first observation of the decay anti-Bʿ-> eta' Dʿ have lead to the conclusion that the eta' production is dominated by the decay b-> sg* and enables to constrain its quark content
Частини книг з теми "Accélérateur de prise"
BURGER, Céline, and Sandra MALLET. "L’urbanisme tactique face à la crise sanitaire." In Les épidémies au prisme des SHS, 175–82. Editions des archives contemporaines, 2022. http://dx.doi.org/10.17184/eac.6003.
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